Shapochka i kyt [A Hat and a Whale]

In the life of Shapochka, many things cannot be done at the moment - eat all the delicacies, run, ride a longboard and even pet dogs. And you also need to take pills on time, because Shap (that's the boy's name since his hair fell out after chemotherapy and he doesn't want to take off his blue knitted cap) is still fighting leukemia. However, the boy does not despair, but communicates with his new second - a blue-gray whale, which appeared out of nowhere in the air above the city. The cat can even ride Shap on his back above the clouds...